/**
 * Created with IntelliJ IDEA.
 * Description:
 * User:张熳
 * Date:2025-10-23
 * Time:17:39
 */
public interface IQueue {
    //在队尾入队列
    boolean offer(int val);
    //在队头出队列
    int poll();
    //获取队头元素
    int peek();
}
